Beryllium co-deposit thermal desorption studies are reported that focus on the effect of D${}_2$ pressure during layer formation, as pressure has been linked in prior work to the formation of a high-retention-capacity sharp-release-feature. A pressure range from 0.3 to 13.3 Pa is explored. Additional insight into what drives the formation of T${}_0$ is established through co-deposit formation parameter variations including deposition temperature spanning 373 K to 608 K, and ion impact energy in the range 10–100 eV. It is found that the formation of the sharp release feature exhibits a multi-parameter dependence, but is predominately favoured by low deposition temperature, higher D${}_2$ pressure, and to a small degree, increased ion impact energy, during deposition. TESSIM simulations of the D${}_2$ thermal release at the ITER bake temperatures of T${}_{b1}$ (513 K) and T${}_{b2}$ (623 K), show that the best efficacy for D removal (defined as the ratio of post to pre bake inventory) is found when the sharp release feature is present. However, when this feature is present, the total retained D inventory tends to be significantly increased.

据报道，铍共沉积热解吸研究侧重于 D 的影响${}_2$层形成过程中的压力，因为在先前的工作中压力与高保留能力的快速释放特征的形成有关。探索了 0.3 到 13.3 Pa 的压力范围。进一步了解是什么驱动了 T 的形成${}_0$是通过共沉积形成参数变化建立的，包括跨越 373 K 至 608 K 的沉积温度和 10-100 eV 范围内的离子冲击能量。发现快速释放特征的形成表现出多参数依赖性，但主要受低沉积温度、较高 D${}_2$在沉积过程中，压力增加，并在一定程度上增加了离子冲击能量。D 的 TESIM 模拟${}_2$ 在 T 的 ITER 烘烤温度下的热释放${}_{乙1}$ (513 K) 和 T${}_{乙2}$(623 K)，表明当存在急剧释放特征时，发现 D 去除的最佳功效（定义为烘烤后与烘烤前库存的比率）。然而，当这个特征存在时，总保留的 D 库存往往会显着增加。